Rockwell Automation WebPak 3000 User Guide - Manual (Page 50)

5-14 WebPak 3000 OIM User Guide
POSITIVE CURRENT LIM (P.005)
Sets the highest
amount of current (%
full load amps) for the
forward bridge. Parameter Range: 0 to MAXIMUM CURRENT (% FLA )
Default Setting: 150 % FLA
Parameter Type: Tunable
This parameter is used as a high limit for the speed loop PI block when POS
CURRENT LIM SEL (P.223) is set to REGISTER .
NEGATIVE CURRENT LIM (P.006)
Selects the highest
amount of current (%
full load amps) for the
reverse bridge. Parameter Range: When NEG CUR LIM INV EN (P.226) = ENABLED :
0 to MAXIMUM CURRENT (% FLA )
When NEG CUR LIM INV EN (P.226) = DISABLED :
– MAXIMUM CURRENT to 0 (% FLA )
Default Setting: ±150 % FLA
Parameter Type: Tunable
This parameter is used as a low limit for the speed loop PI block when NEG CURRENT
LIM SEL (P.224) is set to REGISTER .
The range of NEGATIVE CURRENT LIM depends on the setting of NEG CUR LIM INV EN
(P.226).
IR COMPENSATION
(P.206)
Sets the armature
voltage loss
compensation value
used when the drive
is configured as a
voltage regulator. Parameter Range: 0 to 50%
Default Setting: 0%
Parameter Type: Tunable
This parameter is also used by the Field Current Regulator kit to set the
field-weakened threshold.
IR COMPENSATION is normally determined from the motor data sheet. It should be
set to the percent IR drop of the motor.
If this data is not available on the motor data sheet, you can set this empirically so
that the no-load and full-load speeds are as close as possible when operating as a
voltage regulator.
This parameter is not available for current/torque regulated drives.
!
ATTENTION: The incorrect configuration of IR COMPENSATION (P.206)
can cause an overspeed condition. This parameter must be configured
by a qualified person who understands the significance of configuring it
accurately. Failure to observe this precaution could result in bodily injury.